City dwellers: think you’re sweatier than your country-mouse counterparts? You urban whiners might be right. A NASA study says the concrete jungle traps heat. Don’t believe us? A temperature map of New York City shows “urban heat islands,” where a lack of vegetation means temperatures get up to 10 degrees (Fahrenheit) higher than in leafier areas — and stay that way even after the sun goes down.

(Especially interesting, since we also learned today that summer nighttime temperatures are much higher than they used to be.) 

The solution? More vegetation. As if we really needed another reason to love green roofs.

Story by Kiera Butler. This article originally appeared in Plenty in August 2006. This story was added to in July 2009.

Copyright Environ Press 2006.